OLNEY: LAMPRIFORMES 



375 



Fig. 197. Larva of Lampns gutlalus 10.6 mm SL. MCZ 58991. 



caudal is complete (or nearly so) by 8.6 mm SL in L. guttatus 

 and 1 2-20 mm SL in R. elongatus. S. chordatus, Zu cristatus. 

 Trachipienis spp. and R. glesne. 



The highly protrusible jaws of lampriform fishes develop pre- 

 cociously and jaw structures vary from the long, tubular mouth 

 of S. chordatus (¥\gs. 1 99 and 200; Pietsch 1978a) to only mod- 

 erately specialized in I'elifer. All lampriform genera possess 

 prcmaxillae with long ascending processes which fit withm the 



nasal and ethmoid regions and slide forward during jaw pro- 

 traction. Larval lampriforms. especially Stylephorus (Figs. 199 

 and 200). are easily recognized by this feature although these 

 upper jaw specializations may not be unique to lampriform 

 genera (Rosen, 1973). In trachipterid, radiicephalid and regal- 

 ecid fishes, the premaxilla has a high, broad ascending process 

 which is often conspicuous in capture-damaged larvae. 



Lampriforms are highly pigmented in all life history stages 



